Mr Trump fired Christopher Krebs in a tweet, saying his recent statement defending the security of the election was “highly inaccurate”.
The firing of Mr Krebs, a Trump appointee and director of the Cybersecurity and Infrastructure Security Agency, comes as Mr Trump is refusing to recognise the victory of Joe Biden, and is removing high-level officials seen as insufficiently loyal.
The recent statement by Chris Krebs on the security of the 2020 Election was highly inaccurate, in that there were massive improprieties and fraud – including dead people voting, Poll Watchers not allowed into polling locations, “glitches” in the voting machines which changed…
— Donald J. Trump (@realDonaldTrump) November 18, 2020
He fired defence secretary Mark Esper on November 9, part of a broader shake-up that put Trump loyalists in senior Pentagon positions.
Mr Krebs, a former Microsoft executive, ran the agency, known as CISA, from its creation in the wake of Russian interference with the 2016 vote through to this month’s election.
He won bipartisan praise as CISA co-ordinated federal state and local efforts to defend electoral systems from foreign or domestic interference.